Radout 4.0.1 Export Geometry from Autocad to Radiance

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What is Radout:

Radout is an application for Autocad/Intellicad,
exporting geometry data to the
Radiance
lighting simulation package.

Radout is conceptually based on the old
torad.lsp program,
which provided the inspiration and some of the understanding of autocad's
workings to the original author Philip Thompson.
The main differences are:

Compiled in C/C++, executes many times faster.

Creates a simple rif file for immediate input to rad(1).

Some bugs avoided, some new introduced.

Much better arc/bulge approximation.

Exports light weight polylines in R14 and up.

Radout is an integral part of the architectural lighting design
software package Rayfront,
which offers complete control over all parameters of
Radiance simulations.

Features

Translates all hiding/shading entities from Autocad (and some more,
though support for ACIS solids in R14 and Autocad 2000
will only be available together with Rayfront).

Entities can be selected on screen for selective export.

Entities will be sorted either by color or by layer.
The sorting results in seperate files written for every layer or color.
Floating layers and colors within blocks are fully supported.

Other files created optionally can contain material definitions,
a setup of sky and sun, and a rif file.

Only the entities that are visible (that is their layer is on and thawed)
will be exported, even when nested in a selected block. This gives you
another method of filtering elements of your drawing especially usefull
when you want to update only part of a scene.

The layer name or color number will be part of each respective filename
to make it an unique identifier.